I am starting to suspect that these messages are in face associated with
data loss on my system. I have witnessed these messages occur during
write operations to the disk, and I have also started to see some
strange behavior on my system. dhclient started acting weird after
these messages appeared (not holding on to leases) and I started to
notice database exceptions in my mail client.
Interestingly, the messages seem to have gone away after reboot. I will
watch closely to see if they return after my next raid1 sync.
jamie.